You can do a group by on a computed field, therefore you can use the
date() function to extract the date from the timestamp field:

select date(mytimestamp) as mytimestamps_date
from ...
group by mytimestamps_date

My syntax may be slightly wrong, I have not implemented this anywhere, but
I believe the reasoning to be sound.

Terry

On Thu, 28 Feb 2002, Dimitri  Abramov wrote:

> Good point!
>
> Dimitri
>
> -----Original Message-----
> From: Glenn Shukster [mailto:[EMAIL PROTECTED]]
> Sent: February 28, 2002 12:25 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [CFTALKTor] Storing time as a separate value
>
>
> If you are ever doing a group by query then you can do it by date.  With
> datetime its not worth doing a group by.
>
> Dimitri Abramov wrote:
> >
> > We have a database that stores date and time as separate values in
> different
> > fields. I am wondering when it could be useful? I used to store datetime
> in
> > one field as a result of 'now()' function.
> > It takes less space (I think) and easer to compare.
> >
> > Thanks,
> > Dimitri
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-- 
Terry Fielder
Network Engineer
Great Gulf Homes / Ashton Woods Homes

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